1 /* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.launcher2; 18 19 import android.app.Application; 20 import android.app.SearchManager; 21 import android.content.ContentResolver; 22 import android.content.Context; 23 import android.content.Intent; 24 import android.content.IntentFilter; 25 import android.content.res.Configuration; 26 import android.database.ContentObserver; 27 import android.os.Handler; 28 29 import java.lang.ref.WeakReference; 30 31 public class LauncherApplication extends Application { 32 public LauncherModel mModel; 33 public IconCache mIconCache; 34 private static boolean sIsScreenLarge; 35 private static float sScreenDensity; 36 WeakReference<LauncherProvider> mLauncherProvider; 37 38 @Override onCreate()39 public void onCreate() { 40 super.onCreate(); 41 42 // set sIsScreenXLarge and sScreenDensity *before* creating icon cache 43 final int screenSize = getResources().getConfiguration().screenLayout & Configuration.SCREENLAYOUT_SIZE_MASK; 44 sIsScreenLarge = screenSize == Configuration.SCREENLAYOUT_SIZE_LARGE || 45 screenSize == Configuration.SCREENLAYOUT_SIZE_XLARGE; 46 sScreenDensity = getResources().getDisplayMetrics().density; 47 48 mIconCache = new IconCache(this); 49 mModel = new LauncherModel(this, mIconCache); 50 51 // Register intent receivers 52 IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED); 53 filter.addAction(Intent.ACTION_PACKAGE_REMOVED); 54 filter.addAction(Intent.ACTION_PACKAGE_CHANGED); 55 filter.addDataScheme("package"); 56 registerReceiver(mModel, filter); 57 filter = new IntentFilter(); 58 filter.addAction(Intent.ACTION_EXTERNAL_APPLICATIONS_AVAILABLE); 59 filter.addAction(Intent.ACTION_EXTERNAL_APPLICATIONS_UNAVAILABLE); 60 filter.addAction(Intent.ACTION_LOCALE_CHANGED); 61 filter.addAction(Intent.ACTION_CONFIGURATION_CHANGED); 62 registerReceiver(mModel, filter); 63 filter = new IntentFilter(); 64 filter.addAction(SearchManager.INTENT_GLOBAL_SEARCH_ACTIVITY_CHANGED); 65 registerReceiver(mModel, filter); 66 filter = new IntentFilter(); 67 filter.addAction(SearchManager.INTENT_ACTION_SEARCHABLES_CHANGED); 68 registerReceiver(mModel, filter); 69 70 // Register for changes to the favorites 71 ContentResolver resolver = getContentResolver(); 72 resolver.registerContentObserver(LauncherSettings.Favorites.CONTENT_URI, true, 73 mFavoritesObserver); 74 } 75 76 /** 77 * There's no guarantee that this function is ever called. 78 */ 79 @Override onTerminate()80 public void onTerminate() { 81 super.onTerminate(); 82 83 unregisterReceiver(mModel); 84 85 ContentResolver resolver = getContentResolver(); 86 resolver.unregisterContentObserver(mFavoritesObserver); 87 } 88 89 /** 90 * Receives notifications whenever the user favorites have changed. 91 */ 92 private final ContentObserver mFavoritesObserver = new ContentObserver(new Handler()) { 93 @Override 94 public void onChange(boolean selfChange) { 95 mModel.startLoader(LauncherApplication.this, false); 96 } 97 }; 98 setLauncher(Launcher launcher)99 LauncherModel setLauncher(Launcher launcher) { 100 mModel.initialize(launcher); 101 return mModel; 102 } 103 getIconCache()104 IconCache getIconCache() { 105 return mIconCache; 106 } 107 getModel()108 LauncherModel getModel() { 109 return mModel; 110 } 111 setLauncherProvider(LauncherProvider provider)112 void setLauncherProvider(LauncherProvider provider) { 113 mLauncherProvider = new WeakReference<LauncherProvider>(provider); 114 } 115 getLauncherProvider()116 LauncherProvider getLauncherProvider() { 117 return mLauncherProvider.get(); 118 } 119 isScreenLarge()120 public static boolean isScreenLarge() { 121 return sIsScreenLarge; 122 } 123 isScreenLandscape(Context context)124 public static boolean isScreenLandscape(Context context) { 125 return context.getResources().getConfiguration().orientation == 126 Configuration.ORIENTATION_LANDSCAPE; 127 } 128 getScreenDensity()129 public static float getScreenDensity() { 130 return sScreenDensity; 131 } 132 } 133